L_TextBlurDetector

#include "l_bitmap.h"

L_LTIMGCOR_API L_INT L_TextBlurDetector(pBitmap, pNonBlurredBlocks, NonBlurredBlocksCount, pBlurredBlocks, BlurredBlocksCount, CombinedTextBlocks)

pBITMAPHANDLE pBitmap;	pointer to the bitmap handle
L_RECT** pNonBlurredBlocks;	array of in focus blocks
L_INT* NonBlurredBlocksCount;	the number of in focus blocks
L_RECT** pBlurredBlocks;	array of out of focus blocks
L_INT* BlurredBlocksCount;	the number of out of focus blocks
L_RECT* CombinedTextBlocks;	the boundary of text area in the image

Divides an image it into many blocks, and determines whether each block's background in focus or out of focus.

Parameter	Description
pBitmap	Pointer to the bitmap handle referencing the bitmap to be divided.
pNonBlurredBlocks	Pointer to array of in focus blocks after applying text blur detector.
NonBlurredBlocksCount	Pointer to L_INT to be updated with the number of in focus blocks after applying text blur detector.
pBlurredBlocks	Pointer to array of out of focus blocks after applying text blur detector.
BlurredBlocksCount	Pointer to L_INT to be updated with the number of out of focus blocks after applying text blur detector.
CombinedTextBlocks	The boundary of text area in the image, that's isn't a background.

Returns

SUCCESS	The function was successful.
< 1	An error occurred. Refer to Return Codes.

Comments

This function supports 8, 12, 16-bit grayscale images and 24, 32-bit colored images.

Required DLLs and Libraries

LTIMGCOR
File format DLLs

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Platforms

Win32, x64, Linux.

Example

#define MAKE_IMAGE_PATH(pFileName) TEXT("C:\\Users\\Public\\Documents\\LEADTOOLS Images\\")pFileName 
L_INT TextBlurDetectorExample(L_VOID) 
{ 
   L_INT nRet; 
   BITMAPHANDLE LeadBitmap;   /* Bitmap handle to hold the loaded image. */ 
   /* Load the bitmap, keeping the bits per pixel of the file */ 
   nRet = L_LoadBitmap (MAKE_IMAGE_PATH(TEXT("Barcode.jpg")), &LeadBitmap, sizeof(BITMAPHANDLE), 0, ORDER_BGR, NULL, NULL); 
   if(nRet !=SUCCESS) 
      return nRet; 
   /* Apply text blur detector */ 
   L_RECT* pInFocusBlocks      = NULL; 
   L_INT InFocusBlocksCount    = 0; 
   L_RECT* pOutOfFocusBlocks   = NULL; 
   L_INT OutOfFocusBlocksCount = 0; 
   L_RECT CombinedTextBlocks   = {0}; 
   nRet = L_TextBlurDetector(&LeadBitmap, &pInFocusBlocks, &InFocusBlocksCount, &pOutOfFocusBlocks, &OutOfFocusBlocksCount, &CombinedTextBlocks); 
   L_TextBlurFree(pInFocusBlocks, pOutOfFocusBlocks); 
   //free bitmap 
   if(LeadBitmap.Flags.Allocated) 
      L_FreeBitmap(&LeadBitmap); 
   return nRet; 
}

Help Version 19.0.2017.10.27

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